<!DOCTYPE html>
<html lang="en-US">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>rank_image [HALCON算子参考手册]</title>
<style type="text/css">
      body {
    color: #000000;
    background-color: #ffffff;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}

.body_main {
    margin-left: 35px;
    margin-right: 35px;
}

@media screen and (min-width:992px) {

    .body_main {
        margin-left: 10%;
        margin-right: 10%;
    }

    table.toctable {
        width: 80%
    }
}

@media screen and (min-width:1400px) {

    .body_main {
        margin-left: 15%;
        margin-right: 15%;
    }

    table.toctable {
        width: 70%
    }
}

body>div ul ul {
    margin-left: inherit;
}

a:link {
    color: #0044cc;
}

a:link,
a:visited {
    text-decoration: none;
}

a:link:hover,
a:visited:hover {
    text-decoration: underline;
}

th {
    text-align: left;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    text-rendering: optimizeLegibility;
    color: #666666;
}

code {
    font-family: monospace,monospace;
}

h1 a.halconoperator {
    font-family: Arial, Helvetica, sans-serif;
    color: #666666;
}

h2 a.halconoperator {
    font-family: Arial, Helvetica, sans-serif;
    color: #666666;
}

hr {
    border: 0;
    border-top: solid 1px #f28d26;
}

.pre {
    display: block;
    padding-bottom: 1ex;
    font-family: monospace;
    white-space: pre;
}

pre {
    font-family: monospace, monospace;
    padding: 1ex;
    white-space: pre-wrap;
}

.toc {
    font-size: 80%;
    border-top: 1px dashed #f28d26;
    border-bottom: 1px dashed #f28d26;
    padding-top: 5px;
    padding-bottom: 5px;
}

.inv {
    margin: 0;
    border: 0;
    padding: 0;
}

.banner {
    color: #666666;
    padding-left: 1em;
}

.logo {
    background-color: white;
}

.keyboard {
    font-size: 80%;
    padding-left: 3px;
    padding-right: 3px;
    border-radius: 5px;
    border-width: 1px;
    border-style: solid;
    border-color: #f28d26;
    background-color: #f3f3f3;
}

.warning {
    margin-top: 2ex;
    margin-bottom: 1ex;
    padding: 10px;
    text-align: center;
    border: 1px solid;
    color: #bb0000;
    background-color: #fff7f7
}

.imprint {
    margin-top: 1ex;
    font-size: 80%;
    color: #666666;
}

.imprinthead {
    font-weight: bolder;
    color: #666666;
}

.indexlink {
    text-align: right;
    padding-bottom: 5px;
}

.postscript {
    margin-top: 2ex;
    font-size: 80%;
    color: #666666
}

.evenrow {
    background-color: #e7e7ef;
    vertical-align: top;
}

.oddrow {
    background-color: #f7f7ff;
    vertical-align: top;
}

.headrow {
    background-color: #97979f;
    color: #ffffff;
    vertical-align: top;
}

.logorow {
    vertical-align: top;
}

.error {
    color: red;
}

.var {
    font-style: italic
}

.halconoperator {
    font-family: monospace, monospace;
}

span.operator {
    font-family: monospace, monospace;
}

span.procedure {
    font-family: monospace, monospace;
}

span.operation {
    font-family: monospace, monospace;
}

span.feature {
    font-family: Arial, Helvetica, Homerton, sans-serif;
}

ul {
    padding-left: 1.2em;
}

li.dot {
    list-style-type: square;
    color: #f28d26;
}

.breadcrumb {
    font-size: 80%;
    color: white;
    background-color: #062d64;
    margin-bottom: 20px;
    padding-left: 35px;
    padding-right: 35px;
    padding-bottom: 15px;
}

.webbar {
    font-size: 80%;
    background-color: #dddddd;
    margin-top: 0px;
    margin-left: -35px;
    margin-right: -35px;
    margin-bottom: 0px;
    padding-top: 5px;
    padding-left: 35px;
    padding-right: 35px;
    padding-bottom: 5px;
}

.footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    border-top: 1px dashed #f28d26;
    font-size: 80%;
    color: #666666;
    padding-bottom: 8px;
}

.footer .socialmedia a {
    padding-left: 7px;
}

.socialmedia {
    padding-top: 10px;
}

.copyright {
    margin-top: 19px;
}

.breadcrumb a {
    color: #ffffff;
    border-bottom: 1px solid white;
}

.breadcrumb a:link:hover,
.breadcrumb a:visited:hover {
    text-decoration: none;
    border-bottom: none;
}

.heading {
    margin-top: 1ex;
    font-size: 110%;
    font-weight: bold;
    color: #666666;
}

.text {
    color: black;
}

.example {
    font-size: 80%;
    background-color: #f3f3f3;
    border: 1px dashed #666666;
    padding: 10px;
}

.displaymath {
    display: block;
    text-align: center;
    margin-top: 1ex;
    margin-bottom: 1ex;
}

.title {
    float: left;
    padding-top: 3px;
    padding-bottom: 3px;
}

.signnote {
    font-family: Arial, Helvetica, Homerton, sans-serif;
    font-size: 80%;
    color: #666666;
    font-weight: lighter;
    font-style: italic
}

.par {
    margin-bottom: 1.5em;
}

.parhead {
    text-align: right;
}

.parname {
    float: left;
}

.pardesc {
    font-size: 85%;
    margin-top: 0.5em;
    margin-bottom: 0.5em;
    margin-left: 2em;
}

.parcat {
    color: #666;
    font-weight: bold;
}

*[data-if=cpp],
*[data-if=c],
*[data-if=dotnet],
*[data-if=com],
*[data-if=python] {
    display: none;
}

.tabbar {
    text-align: right;
    border-bottom: 1px solid #f28d26;
    margin-bottom: 0.5em;
}

ul.tabs {
    padding-top: 3px;
    padding-bottom: 3px;
    margin-top: 10px;
    margin-bottom: 0;
    font-size: 80%
}

ul.tabs li {
    padding-top: 3px;
    padding-bottom: 3px;
    display: inline;
    overflow: hidden;
    list-style-type: none;
    margin: 0;
    margin-left: 8px;
    border-top: 1px solid #666;
    border-left: 1px solid #666;
    border-right: 1px solid #666;
}

ul.tabs li.active {
    border-left: 1px solid #f28d26;
    border-right: 1px solid #f28d26;
    border-top: 1px solid #f28d26;
    border-bottom: 1px solid #fff;
}

ul.tabs li.inactive {
    background-color: #eee;
}

ul.tabs li a {
    padding-left: 5px;
    padding-right: 5px;
    color: #666;
}

ul.tabs li a:link:hover {
    text-decoration: none;
}

ul.tabs li.inactive a {
    color: #666;
}

ul.tabs li.active a {
    color: black;
}

dl.generic dd {
    margin-bottom: 1em;
}

.pari {
    color: olive;
}

.paro {
    color: maroon;
}

.comment {
    font-size: 80%;
    color: green;
    white-space: nowrap;
}

table.grid {
    border-collapse: collapse;
}

table.grid td {
    padding: 5px;
    border: 1px solid;
}

table.layout {
    border: 0px;
}

table.layout td {
    padding: 5px;
}

table.table {
    border-collapse: collapse;
}

table.table td {
    padding: 5px;
    border-left: 0px;
    border-right: 0px;
}

table.table tr:last-child {
    border-bottom: 1px solid;
}

table.table th {
    padding: 5px;
    border-top: 1px solid;
    border-bottom: 1px solid;
    border-left: 0px;
    border-right: 0px;
}

.details_summary {
    cursor: pointer;
}

table.toctable {
    width: 100%;
}

table.toctable col:first-child {
    width: 20%;
}

table.toctable col:nth-last-child(2) {
    width: 8%;
}

table.altcolored tr:nth-child(even) {
    background-color: #f3f3f3;
}

    </style>
<!--OP_REF_STYLE_END-->
<script>
    <!--
var active_lang='hdevelop';function switchVisibility(obj,active_lang,new_lang)
{var display_style='inline';
for(var i=0;i<obj.length;i++)
{if(obj.item(i).getAttribute('data-if')==new_lang)
{obj.item(i).style.display=display_style;}
if(obj.item(i).getAttribute('data-if')==active_lang)
{obj.item(i).style.display='none';}}
return;}
function toggleLanguage(new_lang,initial)
{if(active_lang!=new_lang)
{var lis=document.getElementsByTagName('li');for(var i=0;i<lis.length;i++)
{if(lis.item(i).id=='syn-'+new_lang)
{lis.item(i).className='active';}
else
{lis.item(i).className='inactive';}}
var divs=document.getElementsByTagName('div');var spans=document.getElementsByTagName('span');switchVisibility(divs,active_lang,new_lang);switchVisibility(spans,active_lang,new_lang);if(!initial)
{setCookie("halcon_reference_language",new_lang,null,null);}
active_lang=new_lang;}
return;}
function setCookie(name,value,domain,exp_offset,path,secure)
{localStorage.setItem(name,value);}
function getCookie(name)
{return localStorage.getItem(name);}
function initialize()
{var qs=location.href.split('?')[1];var qs_lang_raw=location.href.split('interface=')[1];var qs_lang;if(qs_lang_raw)
{qs_lang=qs_lang_raw.split('#')[0];}
var cookie_lang=getCookie("halcon_reference_language");var new_lang;if((qs_lang=="hdevelop")||(qs_lang=="dotnet")||(qs_lang=="python")||(qs_lang=="cpp")||(qs_lang=="c"))
{new_lang=qs_lang;setCookie("halcon_reference_language",new_lang,null,null);}
else if((cookie_lang=="hdevelop")||(cookie_lang=="dotnet")||(cookie_lang=="python")||(cookie_lang=="cpp")||(cookie_lang=="c"))
{new_lang=cookie_lang;}
else
{new_lang="hdevelop";}
toggleLanguage(new_lang,1);return;}
-->

  </script>
</head>
<body onload="initialize();">
<div class="breadcrumb">
<br class="inv"><a href="index.html">目录</a> / <a href="toc_filters.html">过滤器</a> / <a href="toc_filters_smoothing.html">Smoothing</a><br class="inv">
</div>
<div class="body_main">
<div class="tabbar"><ul class="tabs">
<li id="syn-hdevelop" class="active"><a href="javascript:void(0);" onclick="toggleLanguage('hdevelop')" onfocus="blur()">HDevelop</a></li>
<li id="syn-dotnet" class="inactive"><a href="javascript:void(0);" onclick="toggleLanguage('dotnet')" onfocus="blur()">.NET</a></li>
<li id="syn-python" class="inactive"><a href="javascript:void(0);" onclick="toggleLanguage('python')" onfocus="blur()">Python</a></li>
<li id="syn-cpp" class="inactive"><a href="javascript:void(0);" onclick="toggleLanguage('cpp')" onfocus="blur()">C++</a></li>
<li id="syn-c" class="inactive"><a href="javascript:void(0);" onclick="toggleLanguage('c')" onfocus="blur()">C</a></li>
</ul></div>
<div class="indexlink">
<a href="index_classes.html"><span data-if="dotnet" style="display:none;">类别</span><span data-if="cpp" style="display:none;">类别</span></a><span data-if="dotnet" style="display:none;"> | </span><span data-if="cpp" style="display:none;"> | </span><a href="index_by_name.html">算子列表</a>
</div>
<!--OP_REF_HEADER_END-->
<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">rank_image</span><span data-if="c" style="display:none;">rank_image</span><span data-if="cpp" style="display:none;">RankImage</span><span data-if="dotnet" style="display:none;">RankImage</span><span data-if="python" style="display:none;">rank_image</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">rank_image</span><span data-if="c" style="display:none;">rank_image</span><span data-if="cpp" style="display:none;">RankImage</span><span data-if="dotnet" style="display:none;">RankImage</span><span data-if="python" style="display:none;">rank_image</span></code> — Compute a rank filter with arbitrary masks.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>rank_image</b>(<a href="#Image"><i>Image</i></a>, <a href="#Mask"><i>Mask</i></a> : <a href="#ImageRank"><i>ImageRank</i></a> : <a href="#Rank"><i>Rank</i></a>, <a href="#Margin"><i>Margin</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>rank_image</b>(const Hobject <a href="#Image"><i>Image</i></a>, const Hobject <a href="#Mask"><i>Mask</i></a>, Hobject* <a href="#ImageRank"><i>ImageRank</i></a>, const Hlong <a href="#Rank"><i>Rank</i></a>, const char* <a href="#Margin"><i>Margin</i></a>)</code></p>
<p>
<code>Herror <b>T_rank_image</b>(const Hobject <a href="#Image"><i>Image</i></a>, const Hobject <a href="#Mask"><i>Mask</i></a>, Hobject* <a href="#ImageRank"><i>ImageRank</i></a>, const Htuple <a href="#Rank"><i>Rank</i></a>, const Htuple <a href="#Margin"><i>Margin</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>RankImage</b>(const HObject&amp; <a href="#Image"><i>Image</i></a>, const HObject&amp; <a href="#Mask"><i>Mask</i></a>, HObject* <a href="#ImageRank"><i>ImageRank</i></a>, const HTuple&amp; <a href="#Rank"><i>Rank</i></a>, const HTuple&amp; <a href="#Margin"><i>Margin</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>RankImage</b>(const HRegion&amp; <a href="#Mask"><i>Mask</i></a>, Hlong <a href="#Rank"><i>Rank</i></a>, const HTuple&amp; <a href="#Margin"><i>Margin</i></a>) const</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>RankImage</b>(const HRegion&amp; <a href="#Mask"><i>Mask</i></a>, Hlong <a href="#Rank"><i>Rank</i></a>, const HString&amp; <a href="#Margin"><i>Margin</i></a>) const</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>RankImage</b>(const HRegion&amp; <a href="#Mask"><i>Mask</i></a>, Hlong <a href="#Rank"><i>Rank</i></a>, const char* <a href="#Margin"><i>Margin</i></a>) const</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>RankImage</b>(const HRegion&amp; <a href="#Mask"><i>Mask</i></a>, Hlong <a href="#Rank"><i>Rank</i></a>, const wchar_t* <a href="#Margin"><i>Margin</i></a>) const  <span class="signnote">
            (
            Windows only)
          </span></code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>RankImage</b>(<a href="HObject.html">HObject</a> <a href="#Image"><i>image</i></a>, <a href="HObject.html">HObject</a> <a href="#Mask"><i>mask</i></a>, out <a href="HObject.html">HObject</a> <a href="#ImageRank"><i>imageRank</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Rank"><i>rank</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Margin"><i>margin</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>.<b>RankImage</b>(<a href="HRegion.html">HRegion</a> <a href="#Mask"><i>mask</i></a>, int <a href="#Rank"><i>rank</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Margin"><i>margin</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>.<b>RankImage</b>(<a href="HRegion.html">HRegion</a> <a href="#Mask"><i>mask</i></a>, int <a href="#Rank"><i>rank</i></a>, string <a href="#Margin"><i>margin</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>rank_image</b>(<a href="#Image"><i>image</i></a>: HObject, <a href="#Mask"><i>mask</i></a>: HObject, <a href="#Rank"><i>rank</i></a>: int, <a href="#Margin"><i>margin</i></a>: Union[int, float, str]) -&gt; HObject</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> performs a rank filter on the input image
<a href="#Image"><i><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></i></a> with a mask that is specified by the region
<a href="#Mask"><i><code><span data-if="hdevelop" style="display:inline">Mask</span><span data-if="c" style="display:none">Mask</span><span data-if="cpp" style="display:none">Mask</span><span data-if="com" style="display:none">Mask</span><span data-if="dotnet" style="display:none">mask</span><span data-if="python" style="display:none">mask</span></code></i></a> and returns the filtered image in <a href="#ImageRank"><i><code><span data-if="hdevelop" style="display:inline">ImageRank</span><span data-if="c" style="display:none">ImageRank</span><span data-if="cpp" style="display:none">ImageRank</span><span data-if="com" style="display:none">ImageRank</span><span data-if="dotnet" style="display:none">imageRank</span><span data-if="python" style="display:none">image_rank</span></code></i></a>.
The shape of the mask can be chosen arbitrarily and can, for
example, be created with operators like <a href="gen_circle.html"><code><span data-if="hdevelop" style="display:inline">gen_circle</span><span data-if="c" style="display:none">gen_circle</span><span data-if="cpp" style="display:none">GenCircle</span><span data-if="com" style="display:none">GenCircle</span><span data-if="dotnet" style="display:none">GenCircle</span><span data-if="python" style="display:none">gen_circle</span></code></a> or
<a href="draw_region.html"><code><span data-if="hdevelop" style="display:inline">draw_region</span><span data-if="c" style="display:none">draw_region</span><span data-if="cpp" style="display:none">DrawRegion</span><span data-if="com" style="display:none">DrawRegion</span><span data-if="dotnet" style="display:none">DrawRegion</span><span data-if="python" style="display:none">draw_region</span></code></a>.  The position of the mask does not influence
the result since the center of gravity of the mask region is used as
the reference point of the mask.
</p>
<p>Conceptually, the rank filter sorts all gray values within the mask
in ascending order and then selects the gray value with rank
<a href="#Rank"><i><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></i></a>.  The rank 1 corresponds to the smallest gray value
and the rank A corresponds to the largest gray value within the
mask.  Here, A denotes the area of <a href="#Mask"><i><code><span data-if="hdevelop" style="display:inline">Mask</span><span data-if="c" style="display:none">Mask</span><span data-if="cpp" style="display:none">Mask</span><span data-if="com" style="display:none">Mask</span><span data-if="dotnet" style="display:none">mask</span><span data-if="python" style="display:none">mask</span></code></i></a> (see
<a href="area_center.html"><code><span data-if="hdevelop" style="display:inline">area_center</span><span data-if="c" style="display:none">area_center</span><span data-if="cpp" style="display:none">AreaCenter</span><span data-if="com" style="display:none">AreaCenter</span><span data-if="dotnet" style="display:none">AreaCenter</span><span data-if="python" style="display:none">area_center</span></code></a>).  For <a href="#Rank"><i><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></i></a> = (A - 1) / 2 + 1,
<code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> returns the median gray value (see
<a href="median_image.html"><code><span data-if="hdevelop" style="display:inline">median_image</span><span data-if="c" style="display:none">median_image</span><span data-if="cpp" style="display:none">MedianImage</span><span data-if="com" style="display:none">MedianImage</span><span data-if="dotnet" style="display:none">MedianImage</span><span data-if="python" style="display:none">median_image</span></code></a>).  For <a href="#Rank"><i><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></i></a> = 1, <code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code>
performs a gray value erosion (see <a href="gray_erosion_rect.html"><code><span data-if="hdevelop" style="display:inline">gray_erosion_rect</span><span data-if="c" style="display:none">gray_erosion_rect</span><span data-if="cpp" style="display:none">GrayErosionRect</span><span data-if="com" style="display:none">GrayErosionRect</span><span data-if="dotnet" style="display:none">GrayErosionRect</span><span data-if="python" style="display:none">gray_erosion_rect</span></code></a>,
<a href="gray_erosion_shape.html"><code><span data-if="hdevelop" style="display:inline">gray_erosion_shape</span><span data-if="c" style="display:none">gray_erosion_shape</span><span data-if="cpp" style="display:none">GrayErosionShape</span><span data-if="com" style="display:none">GrayErosionShape</span><span data-if="dotnet" style="display:none">GrayErosionShape</span><span data-if="python" style="display:none">gray_erosion_shape</span></code></a>, and <a href="gray_erosion.html"><code><span data-if="hdevelop" style="display:inline">gray_erosion</span><span data-if="c" style="display:none">gray_erosion</span><span data-if="cpp" style="display:none">GrayErosion</span><span data-if="com" style="display:none">GrayErosion</span><span data-if="dotnet" style="display:none">GrayErosion</span><span data-if="python" style="display:none">gray_erosion</span></code></a>), while for
<a href="#Rank"><i><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></i></a> = A <code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> performs a gray value
dilation (see <a href="gray_dilation_rect.html"><code><span data-if="hdevelop" style="display:inline">gray_dilation_rect</span><span data-if="c" style="display:none">gray_dilation_rect</span><span data-if="cpp" style="display:none">GrayDilationRect</span><span data-if="com" style="display:none">GrayDilationRect</span><span data-if="dotnet" style="display:none">GrayDilationRect</span><span data-if="python" style="display:none">gray_dilation_rect</span></code></a>,
<a href="gray_dilation_shape.html"><code><span data-if="hdevelop" style="display:inline">gray_dilation_shape</span><span data-if="c" style="display:none">gray_dilation_shape</span><span data-if="cpp" style="display:none">GrayDilationShape</span><span data-if="com" style="display:none">GrayDilationShape</span><span data-if="dotnet" style="display:none">GrayDilationShape</span><span data-if="python" style="display:none">gray_dilation_shape</span></code></a>, and <a href="gray_dilation.html"><code><span data-if="hdevelop" style="display:inline">gray_dilation</span><span data-if="c" style="display:none">gray_dilation</span><span data-if="cpp" style="display:none">GrayDilation</span><span data-if="com" style="display:none">GrayDilation</span><span data-if="dotnet" style="display:none">GrayDilation</span><span data-if="python" style="display:none">gray_dilation</span></code></a>).
</p>
<p><code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> can be used, for example, to suppress noise or to
suppress unwanted objects that are smaller than the mask.
Furthermore, <code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> is less sensitive to noise than the
corresponding gray value morphology operators.  Therefore, to obtain
a more robust version of the gray value morphology, instead of using
1 or A, slightly larger or smaller values should be selected for
<a href="#Rank"><i><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></i></a>.
</p>
<p>Several border treatments can be chosen for filtering via the
parameter <a href="#Margin"><i><code><span data-if="hdevelop" style="display:inline">Margin</span><span data-if="c" style="display:none">Margin</span><span data-if="cpp" style="display:none">Margin</span><span data-if="com" style="display:none">Margin</span><span data-if="dotnet" style="display:none">margin</span><span data-if="python" style="display:none">margin</span></code></i></a>:
<span class="pre">
    gray value   Pixels outside of the image borders are assumed to
                 be constant (with the specified gray value).
    'continued'  Continuation of border pixels.
    'cyclic'     Cyclic continuation of image borders.
    'mirrored'   Reflection of pixels at the image borders.
</span>
</p>
<p>For an explanation of the concept of smoothing filters see the introduction
of chapter <a href="toc_filters_smoothing.html">Filters / Smoothing</a>.</p>
<h2 id="sec_attention">注意</h2>
<p><code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> uses an algorithm with a runtime per pixel that
depends on the number of runs in the mask <a href="#Mask"><i><code><span data-if="hdevelop" style="display:inline">Mask</span><span data-if="c" style="display:none">Mask</span><span data-if="cpp" style="display:none">Mask</span><span data-if="com" style="display:none">Mask</span><span data-if="dotnet" style="display:none">mask</span><span data-if="python" style="display:none">mask</span></code></i></a>.  Therefore,
<code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> is slower than <a href="rank_rect.html"><code><span data-if="hdevelop" style="display:inline">rank_rect</span><span data-if="c" style="display:none">rank_rect</span><span data-if="cpp" style="display:none">RankRect</span><span data-if="com" style="display:none">RankRect</span><span data-if="dotnet" style="display:none">RankRect</span><span data-if="python" style="display:none">rank_rect</span></code></a> for rectangular
masks with a large mask height.  The precise mask height for which
<a href="rank_rect.html"><code><span data-if="hdevelop" style="display:inline">rank_rect</span><span data-if="c" style="display:none">rank_rect</span><span data-if="cpp" style="display:none">RankRect</span><span data-if="com" style="display:none">RankRect</span><span data-if="dotnet" style="display:none">RankRect</span><span data-if="python" style="display:none">rank_rect</span></code></a> will become faster than <code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> depends
on the computer architecture (processor type, availability of SIMD
instructions like SSE2 or MMX, cache size and throughput, memory
throughput).  Typically, this is the case for mask heights &gt; 15,
but can also be the case only for larger mask sizes, e.g., if SIMD
instructions are unavailable and memory throughput is low.
</p>
<p>Furthermore, it should be noted that <a href="rank_rect.html"><code><span data-if="hdevelop" style="display:inline">rank_rect</span><span data-if="c" style="display:none">rank_rect</span><span data-if="cpp" style="display:none">RankRect</span><span data-if="com" style="display:none">RankRect</span><span data-if="dotnet" style="display:none">RankRect</span><span data-if="python" style="display:none">rank_rect</span></code></a> uses a
recursive implementation, which internally computes the filter
response on the smallest enclosing rectangle of the domain of the
input image.  Therefore, if the domain of the input image only
covers a small fraction of the smallest enclosing rectangle, it can
happen that <code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> is faster than <a href="rank_rect.html"><code><span data-if="hdevelop" style="display:inline">rank_rect</span><span data-if="c" style="display:none">rank_rect</span><span data-if="cpp" style="display:none">RankRect</span><span data-if="com" style="display:none">RankRect</span><span data-if="dotnet" style="display:none">RankRect</span><span data-if="python" style="display:none">rank_rect</span></code></a> even
for larger mask heights.
</p>
<p><code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code> should neither be used with <a href="#Rank"><i><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></i></a> = 1
to perform a gray value erosion nor with <a href="#Rank"><i><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></i></a> = A to
perform a gray value dilation.  In these cases, 该算子s
<a href="gray_erosion_rect.html"><code><span data-if="hdevelop" style="display:inline">gray_erosion_rect</span><span data-if="c" style="display:none">gray_erosion_rect</span><span data-if="cpp" style="display:none">GrayErosionRect</span><span data-if="com" style="display:none">GrayErosionRect</span><span data-if="dotnet" style="display:none">GrayErosionRect</span><span data-if="python" style="display:none">gray_erosion_rect</span></code></a>, <a href="gray_erosion_shape.html"><code><span data-if="hdevelop" style="display:inline">gray_erosion_shape</span><span data-if="c" style="display:none">gray_erosion_shape</span><span data-if="cpp" style="display:none">GrayErosionShape</span><span data-if="com" style="display:none">GrayErosionShape</span><span data-if="dotnet" style="display:none">GrayErosionShape</span><span data-if="python" style="display:none">gray_erosion_shape</span></code></a>, or
<a href="gray_erosion.html"><code><span data-if="hdevelop" style="display:inline">gray_erosion</span><span data-if="c" style="display:none">gray_erosion</span><span data-if="cpp" style="display:none">GrayErosion</span><span data-if="com" style="display:none">GrayErosion</span><span data-if="dotnet" style="display:none">GrayErosion</span><span data-if="python" style="display:none">gray_erosion</span></code></a> and <a href="gray_dilation_rect.html"><code><span data-if="hdevelop" style="display:inline">gray_dilation_rect</span><span data-if="c" style="display:none">gray_dilation_rect</span><span data-if="cpp" style="display:none">GrayDilationRect</span><span data-if="com" style="display:none">GrayDilationRect</span><span data-if="dotnet" style="display:none">GrayDilationRect</span><span data-if="python" style="display:none">gray_dilation_rect</span></code></a>,
<a href="gray_dilation_shape.html"><code><span data-if="hdevelop" style="display:inline">gray_dilation_shape</span><span data-if="c" style="display:none">gray_dilation_shape</span><span data-if="cpp" style="display:none">GrayDilationShape</span><span data-if="com" style="display:none">GrayDilationShape</span><span data-if="dotnet" style="display:none">GrayDilationShape</span><span data-if="python" style="display:none">gray_dilation_shape</span></code></a>, or <a href="gray_dilation.html"><code><span data-if="hdevelop" style="display:inline">gray_dilation</span><span data-if="c" style="display:none">gray_dilation</span><span data-if="cpp" style="display:none">GrayDilation</span><span data-if="com" style="display:none">GrayDilation</span><span data-if="dotnet" style="display:none">GrayDilation</span><span data-if="python" style="display:none">gray_dilation</span></code></a>, respectively,
are typically faster than <code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code>.
</p>
<p>Note that filter operators may return unexpected results if
an image with a reduced domain is used as input. Please refer to the
chapter <a href="toc_filters.html">过滤器</a>.</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  
    <li>在元组级别自动并行化。</li>
    <li>在图像通道级别自动并行化。</li>
    <li>Automatically parallelized on  domain level.</li>
  
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Image" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></b> (input_object)  </span><span>(multichannel-)image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte / int2 / uint2 / int4 / real)</span>
</div>
<p class="pardesc">Image to be filtered.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Mask" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Mask</span><span data-if="c" style="display:none">Mask</span><span data-if="cpp" style="display:none">Mask</span><span data-if="com" style="display:none">Mask</span><span data-if="dotnet" style="display:none">mask</span><span data-if="python" style="display:none">mask</span></code></b> (input_object)  </span><span>region <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HRegion.html">HRegion</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HRegion.html">HRegion</a></span><span data-if="c" style="display:none">Hobject</span></span>
</div>
<p class="pardesc">Filter mask.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ImageRank" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ImageRank</span><span data-if="c" style="display:none">ImageRank</span><span data-if="cpp" style="display:none">ImageRank</span><span data-if="com" style="display:none">ImageRank</span><span data-if="dotnet" style="display:none">imageRank</span><span data-if="python" style="display:none">image_rank</span></code></b> (output_object)  </span><span>multichannel-image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject *</span> (byte / int2 / uint2 / int4 / real)</span>
</div>
<p class="pardesc">Filtered image.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Rank" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Rank</span><span data-if="c" style="display:none">Rank</span><span data-if="cpp" style="display:none">Rank</span><span data-if="com" style="display:none">Rank</span><span data-if="dotnet" style="display:none">rank</span><span data-if="python" style="display:none">rank</span></code></b> (input_control)  </span><span>integer <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">int</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (integer)</span><span data-if="dotnet" style="display:none"> (<i>int</i> / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>Hlong</i>)</span><span data-if="c" style="display:none"> (<i>Hlong</i>)</span></span>
</div>
<p class="pardesc">Rank of the output gray value.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>5</p>
<p class="pardesc"><span class="parcat">Suggested values:
      </span>3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 31, 49, 51, 61, 71, 81, 91, 101</p>
<p class="pardesc"><span class="parcat">Value range:
      </span><code>1
          ≤
        
    <span data-if="hdevelop" style="display:inline">Rank</span>
    <span data-if="c" style="display:none">Rank</span>
    <span data-if="cpp" style="display:none">Rank</span>
    <span data-if="com" style="display:none">Rank</span>
    <span data-if="dotnet" style="display:none">rank</span>
    <span data-if="python" style="display:none">rank</span>
    
          ≤
          4095</code></p>
<p class="pardesc"><span class="parcat">Minimum increment:
      </span>1</p>
<p class="pardesc"><span class="parcat">Recommended increment:
      </span>2</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Margin" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Margin</span><span data-if="c" style="display:none">Margin</span><span data-if="cpp" style="display:none">Margin</span><span data-if="com" style="display:none">Margin</span><span data-if="dotnet" style="display:none">margin</span><span data-if="python" style="display:none">margin</span></code></b> (input_control)  </span><span>string <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">Union[int, float, str]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (string / </span><span data-if="hdevelop" style="display:inline">integer / </span><span data-if="hdevelop" style="display:inline">real)</span><span data-if="dotnet" style="display:none"> (<i>string</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long / </span><span data-if="dotnet" style="display:none">double)</span><span data-if="cpp" style="display:none"> (<i>HString</i> / </span><span data-if="cpp" style="display:none">Hlong / </span><span data-if="cpp" style="display:none">double)</span><span data-if="c" style="display:none"> (<i>char*</i> / </span><span data-if="c" style="display:none">Hlong / </span><span data-if="c" style="display:none">double)</span></span>
</div>
<p class="pardesc">Border treatment.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>
    <span data-if="hdevelop" style="display:inline">'mirrored'</span>
    <span data-if="c" style="display:none">"mirrored"</span>
    <span data-if="cpp" style="display:none">"mirrored"</span>
    <span data-if="com" style="display:none">"mirrored"</span>
    <span data-if="dotnet" style="display:none">"mirrored"</span>
    <span data-if="python" style="display:none">"mirrored"</span>
</p>
<p class="pardesc"><span class="parcat">Suggested values:
      </span><span data-if="hdevelop" style="display:inline">'mirrored'</span><span data-if="c" style="display:none">"mirrored"</span><span data-if="cpp" style="display:none">"mirrored"</span><span data-if="com" style="display:none">"mirrored"</span><span data-if="dotnet" style="display:none">"mirrored"</span><span data-if="python" style="display:none">"mirrored"</span>, <span data-if="hdevelop" style="display:inline">'cyclic'</span><span data-if="c" style="display:none">"cyclic"</span><span data-if="cpp" style="display:none">"cyclic"</span><span data-if="com" style="display:none">"cyclic"</span><span data-if="dotnet" style="display:none">"cyclic"</span><span data-if="python" style="display:none">"cyclic"</span>, <span data-if="hdevelop" style="display:inline">'continued'</span><span data-if="c" style="display:none">"continued"</span><span data-if="cpp" style="display:none">"continued"</span><span data-if="com" style="display:none">"continued"</span><span data-if="dotnet" style="display:none">"continued"</span><span data-if="python" style="display:none">"continued"</span>, 0, 30, 60, 90, 120, 150, 180, 210, 240, 255</p>
</div>
<h2 id="sec_example_all">例程 (HDevelop)</h2>
<pre class="example">
read_image (Image, 'fabrik')
draw_region (Region, WindowHandle)
rank_image (Image, Region, ImageRank, 5, 'mirrored')
dev_display(ImageRank)
</pre>
<h2 id="sec_complexity">Complexity</h2>
<p>For each pixel: O(N), where N is the number of runs of
<a href="#Mask"><i><code><span data-if="hdevelop" style="display:inline">Mask</span><span data-if="c" style="display:none">Mask</span><span data-if="cpp" style="display:none">Mask</span><span data-if="com" style="display:none">Mask</span><span data-if="dotnet" style="display:none">mask</span><span data-if="python" style="display:none">mask</span></code></i></a> (see <a href="runlength_features.html"><code><span data-if="hdevelop" style="display:inline">runlength_features</span><span data-if="c" style="display:none">runlength_features</span><span data-if="cpp" style="display:none">RunlengthFeatures</span><span data-if="com" style="display:none">RunlengthFeatures</span><span data-if="dotnet" style="display:none">RunlengthFeatures</span><span data-if="python" style="display:none">runlength_features</span></code></a>).</p>
<h2 id="sec_result">结果</h2>
<p>If the parameter values are correct 该算子 <code><span data-if="hdevelop" style="display:inline">rank_image</span><span data-if="c" style="display:none">rank_image</span><span data-if="cpp" style="display:none">RankImage</span><span data-if="com" style="display:none">RankImage</span><span data-if="dotnet" style="display:none">RankImage</span><span data-if="python" style="display:none">rank_image</span></code>
返回值 <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    .  The behavior in case of empty input (no
input images available) is set via 该算子
<a href="set_system.html"><code><span data-if="hdevelop" style="display:inline">set_system('no_object_result',&lt;Result&gt;)</span><span data-if="c" style="display:none">set_system("no_object_result",&lt;Result&gt;)</span><span data-if="cpp" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="com" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="dotnet" style="display:none">SetSystem("no_object_result",&lt;Result&gt;)</span><span data-if="python" style="display:none">set_system("no_object_result",&lt;Result&gt;)</span></code></a>.  If necessary, an
exception is raised.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="read_image.html"><span data-if="hdevelop" style="display:inline">read_image</span><span data-if="c" style="display:none">read_image</span><span data-if="cpp" style="display:none">ReadImage</span><span data-if="com" style="display:none">ReadImage</span><span data-if="dotnet" style="display:none">ReadImage</span><span data-if="python" style="display:none">read_image</span></a></code>, 
<code><a href="draw_region.html"><span data-if="hdevelop" style="display:inline">draw_region</span><span data-if="c" style="display:none">draw_region</span><span data-if="cpp" style="display:none">DrawRegion</span><span data-if="com" style="display:none">DrawRegion</span><span data-if="dotnet" style="display:none">DrawRegion</span><span data-if="python" style="display:none">draw_region</span></a></code>, 
<code><a href="gen_circle.html"><span data-if="hdevelop" style="display:inline">gen_circle</span><span data-if="c" style="display:none">gen_circle</span><span data-if="cpp" style="display:none">GenCircle</span><span data-if="com" style="display:none">GenCircle</span><span data-if="dotnet" style="display:none">GenCircle</span><span data-if="python" style="display:none">gen_circle</span></a></code>, 
<code><a href="gen_rectangle1.html"><span data-if="hdevelop" style="display:inline">gen_rectangle1</span><span data-if="c" style="display:none">gen_rectangle1</span><span data-if="cpp" style="display:none">GenRectangle1</span><span data-if="com" style="display:none">GenRectangle1</span><span data-if="dotnet" style="display:none">GenRectangle1</span><span data-if="python" style="display:none">gen_rectangle1</span></a></code>, 
<code><a href="gen_rectangle2.html"><span data-if="hdevelop" style="display:inline">gen_rectangle2</span><span data-if="c" style="display:none">gen_rectangle2</span><span data-if="cpp" style="display:none">GenRectangle2</span><span data-if="com" style="display:none">GenRectangle2</span><span data-if="dotnet" style="display:none">GenRectangle2</span><span data-if="python" style="display:none">gen_rectangle2</span></a></code>
</p>
<h2 id="sec_successors">可能的后置算子</h2>
<p>
<code><a href="threshold.html"><span data-if="hdevelop" style="display:inline">threshold</span><span data-if="c" style="display:none">threshold</span><span data-if="cpp" style="display:none">Threshold</span><span data-if="com" style="display:none">Threshold</span><span data-if="dotnet" style="display:none">Threshold</span><span data-if="python" style="display:none">threshold</span></a></code>, 
<code><a href="dyn_threshold.html"><span data-if="hdevelop" style="display:inline">dyn_threshold</span><span data-if="c" style="display:none">dyn_threshold</span><span data-if="cpp" style="display:none">DynThreshold</span><span data-if="com" style="display:none">DynThreshold</span><span data-if="dotnet" style="display:none">DynThreshold</span><span data-if="python" style="display:none">dyn_threshold</span></a></code>, 
<code><a href="regiongrowing.html"><span data-if="hdevelop" style="display:inline">regiongrowing</span><span data-if="c" style="display:none">regiongrowing</span><span data-if="cpp" style="display:none">Regiongrowing</span><span data-if="com" style="display:none">Regiongrowing</span><span data-if="dotnet" style="display:none">Regiongrowing</span><span data-if="python" style="display:none">regiongrowing</span></a></code>
</p>
<h2 id="sec_alternatives">可替代算子</h2>
<p>
<code><a href="rank_rect.html"><span data-if="hdevelop" style="display:inline">rank_rect</span><span data-if="c" style="display:none">rank_rect</span><span data-if="cpp" style="display:none">RankRect</span><span data-if="com" style="display:none">RankRect</span><span data-if="dotnet" style="display:none">RankRect</span><span data-if="python" style="display:none">rank_rect</span></a></code>, 
<code><a href="median_image.html"><span data-if="hdevelop" style="display:inline">median_image</span><span data-if="c" style="display:none">median_image</span><span data-if="cpp" style="display:none">MedianImage</span><span data-if="com" style="display:none">MedianImage</span><span data-if="dotnet" style="display:none">MedianImage</span><span data-if="python" style="display:none">median_image</span></a></code>, 
<code><a href="median_rect.html"><span data-if="hdevelop" style="display:inline">median_rect</span><span data-if="c" style="display:none">median_rect</span><span data-if="cpp" style="display:none">MedianRect</span><span data-if="com" style="display:none">MedianRect</span><span data-if="dotnet" style="display:none">MedianRect</span><span data-if="python" style="display:none">median_rect</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="gray_erosion_rect.html"><span data-if="hdevelop" style="display:inline">gray_erosion_rect</span><span data-if="c" style="display:none">gray_erosion_rect</span><span data-if="cpp" style="display:none">GrayErosionRect</span><span data-if="com" style="display:none">GrayErosionRect</span><span data-if="dotnet" style="display:none">GrayErosionRect</span><span data-if="python" style="display:none">gray_erosion_rect</span></a></code>, 
<code><a href="gray_dilation_rect.html"><span data-if="hdevelop" style="display:inline">gray_dilation_rect</span><span data-if="c" style="display:none">gray_dilation_rect</span><span data-if="cpp" style="display:none">GrayDilationRect</span><span data-if="com" style="display:none">GrayDilationRect</span><span data-if="dotnet" style="display:none">GrayDilationRect</span><span data-if="python" style="display:none">gray_dilation_rect</span></a></code>, 
<code><a href="gray_erosion_shape.html"><span data-if="hdevelop" style="display:inline">gray_erosion_shape</span><span data-if="c" style="display:none">gray_erosion_shape</span><span data-if="cpp" style="display:none">GrayErosionShape</span><span data-if="com" style="display:none">GrayErosionShape</span><span data-if="dotnet" style="display:none">GrayErosionShape</span><span data-if="python" style="display:none">gray_erosion_shape</span></a></code>, 
<code><a href="gray_dilation_shape.html"><span data-if="hdevelop" style="display:inline">gray_dilation_shape</span><span data-if="c" style="display:none">gray_dilation_shape</span><span data-if="cpp" style="display:none">GrayDilationShape</span><span data-if="com" style="display:none">GrayDilationShape</span><span data-if="dotnet" style="display:none">GrayDilationShape</span><span data-if="python" style="display:none">gray_dilation_shape</span></a></code>, 
<code><a href="gray_erosion.html"><span data-if="hdevelop" style="display:inline">gray_erosion</span><span data-if="c" style="display:none">gray_erosion</span><span data-if="cpp" style="display:none">GrayErosion</span><span data-if="com" style="display:none">GrayErosion</span><span data-if="dotnet" style="display:none">GrayErosion</span><span data-if="python" style="display:none">gray_erosion</span></a></code>, 
<code><a href="gray_dilation.html"><span data-if="hdevelop" style="display:inline">gray_dilation</span><span data-if="c" style="display:none">gray_dilation</span><span data-if="cpp" style="display:none">GrayDilation</span><span data-if="com" style="display:none">GrayDilation</span><span data-if="dotnet" style="display:none">GrayDilation</span><span data-if="python" style="display:none">gray_dilation</span></a></code>
</p>
<h2 id="sec_references">References</h2>
<p>

T.S. Huang, G.J. Yang, G.Y. Tang; “A Fast Two-Dimensional Median
Filtering Algorithm”; IEEE Transactions on Acoustics, Speech, and
Signal Processing, vol. 27, no. 1, pp. 13-18, 1979.
<br>
R. Haralick, L. Shapiro; “Computer and Robot Vision”;
Addison-Wesley, 1992, pp. 318-320.
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
<!--OP_REF_FOOTER_START-->
<hr>
<div class="indexlink">
<a href="index_classes.html"><span data-if="dotnet" style="display:none;">类别</span><span data-if="cpp" style="display:none;">类别</span></a><span data-if="dotnet" style="display:none;"> | </span><span data-if="cpp" style="display:none;"> | </span><a href="index_by_name.html">算子列表</a>
</div>
<div class="footer">
<div class="copyright">HALCON算子参考手册 Copyright © 2015-2023 51Halcon</div>
</div>
</div>
</body>
</html>
